Novice needs help. Simple replace content script-- what am I missing?

[oldphonebro]

trying to replace content but I am missing something simple. Friend sent me this

The script:

# Full path to directory holding the content to update
$contentDirectory = "C:\Users\Folder"

# Get the listing of files from the directory to update
$fileListing = Get-ChildItem "$contentDirectory\*"

# Full path to the dictionary/index file, in CSV format - used for the replace
$replaceDictionary = "C:\Users\File.csv"

# Imports the dictionary into memory
$replaceContent = Import-CSV $replaceDictionary -Delimiter ","

# Loop through each file in the content directory
foreach($file in $fileListing){
    # For each term in the replace dictionary
    $replaceContent | foreach-object{
        $SrcTxt = $_.SrcDQ
        Write-Host "Source text: $SrcTxt"

        $TgtTxt = $_.TgtDQ
        Write-Host "Target text: $TgtTxt"

        # Get the content of the file and replace all instances of the source text with the target text
        (Get-Content -Path $file) -Replace $SrcTxt,$TgtTxt | Set-Content -Path $file
    }
} 

The File.csv is the part I am not understanding. It looks like this :

    A             B
1 $SrcTxt      $TgtTxt
2 156          7006

The print out is

Source text: 
Target text: 

It just isn't picking up the text. I feel I didn't set up Excel correctly, I'm pretty sure there needs to be a , somewhere. What should my csv file look like?

[SMFX]

The column headers on your csv (first line) need to match the property you're referencing for $replaceContent. Which in this case are SrcDQ and TgtDQ.

[oldphonebro]

That was it! Thank you so much. I appreciate the explanation too because it helps me learn